<template>
  <div>
      crr的值:[{{value}}]
  </div>
</template>

<script>
export default {
  data () {
    return {
      brr: [1, 0, 2, 0, 0, 0, 5],
      crr: [],
      value: ''
    }
  },
  created () {
    this.brr.forEach((item, index) => {
      this.crr[index] = item * 2
    })
    this.value = this.crr.join(',')
  }
}
</script>

<style>

</style>
